Yeah, there's three of them, IIRC: there's the one that I and A.--- B.--- linked to, there's the more sleddy style that shows up in the first page of image search, and then there's the one without the sled at all (looks like a normal hard drive).
So yeah, you kind of need to be paying attention to what you're buying, but I think the price on all three are similar.
So yeah, I think I'll wait. Even if it doesn't come down below US$230 again any time soon, I just shouldn't be spending the US$200+ right now.